You want to get a Heart of gold to provide the extra gold income. i sell it toward where i build my tri force. You want to get a dorans so u can get some life steal and attack damage early game. Get the B.F sword then the vampiric seapter because u already have life steal from Dorans and you need the extra damage earlier. the rest of the iteams are pretty much key AD items.You get the GA so u have some sustane and u can come back too life. If you want u can sell the GA and Get more damage output or a Warmogs.

Riven is a Powerhouse with her stun and her Q. Going tanky wouldn't really do her any good mid or early game. She need to do Some extra Damage. When I went full AD i Carried my team. For the next few games I did the same exact thing and i carried all game. P.S MAKE SURE YOU'RE SOLO LANE. YOU NEED THE SOLO EXP AND THE FARM. FARM ALL THE TIME!!! CS IS YOUR BEST FRIEND!